The Montana Youth Risk Behavior Survey (YRBS) is administered by the Montana Office of Public Instruction every two years to students in grades 7 through 12. The purpose of the survey is to help monitor the prevalence of behaviors that not only influence youth health, but also put youth at risk for the most significant health and social problems that can occur during adolescence. While all schools in Montana can participate in the survey on a volunteer basis, approximately 50 high schools are randomly selected to be included to provide the Montana statewide data to be used in other national YRBS reports. The 2011 YRBS was conducted in February 2011. Schools administering the survey were provided with detailed written instructions on conducting a random survey in their schools. Data used in this report from the 2011 YRBS are based on a random survey of Montana high school students. According to the 2011 YRBS, seventeen percent of Montana high school students reported smoking during the past 30 days. Eighteen percent of males and fifteen percent of females currently smoke. Among Montana high school students who currently smoke, four percent were ninth graders, five percent were tenth graders, eight percent were eleventh graders and nine percent were twelfth grade students.